Revert "usb: cdns3: Add TI specific wrapper driver"

This reverts commit d9b9925c0235166f284051ecac9bef53c22218f2.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

drivers/usb/cdns3/Kconfig

@@ -41,14 +41,4 @@ config USB_CDNS3_PCI_WRAP
 	  If you choose to build this driver as module it will
 	  be dynamically linked and module will be called cdns3-pci.ko
 
-config USB_CDNS3_TI
-	tristate "Cadence USB3 support on TI platforms"
-	depends on ARCH_K3 || COMPILE_TEST
-	default USB_CDNS3
-	help
-	  Say 'Y' or 'M' here if you are building for Texas Instruments
-	  platforms that contain Cadence USB3 controller core.
-
-	  e.g. J721e.
-
 endif

drivers/usb/cdns3/Makefile

@@ -12,4 +12,3 @@ endif
 cdns3-$(CONFIG_USB_CDNS3_GADGET)	+= gadget.o ep0.o trace.o
 cdns3-$(CONFIG_USB_CDNS3_HOST)		+= host.o
 obj-$(CONFIG_USB_CDNS3_PCI_WRAP)	+= cdns3-pci-wrap.o
-obj-$(CONFIG_USB_CDNS3_TI)		+= cdns3-ti.o

drivers/usb/cdns3/cdns3-ti.c

@@ -1,244 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/**
- * cdns_ti-ti.c - TI specific Glue layer for Cadence USB Controller
- *
- * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
- */
-
-#include <linux/bits.h>
-#include <linux/clk.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/io.h>
-#include <linux/of_platform.h>
-#include <linux/pm_runtime.h>
-
-/* USB Wrapper register offsets */
-#define USBSS_PID		0x0
-#define	USBSS_W1		0x4
-#define USBSS_STATIC_CONFIG	0x8
-#define USBSS_PHY_TEST		0xc
-#define	USBSS_DEBUG_CTRL	0x10
-#define	USBSS_DEBUG_INFO	0x14
-#define	USBSS_DEBUG_LINK_STATE	0x18
-#define	USBSS_DEVICE_CTRL	0x1c
-
-/* Wrapper 1 register bits */
-#define USBSS_W1_PWRUP_RST		BIT(0)
-#define USBSS_W1_OVERCURRENT_SEL	BIT(8)
-#define USBSS_W1_MODESTRAP_SEL		BIT(9)
-#define USBSS_W1_OVERCURRENT		BIT(16)
-#define USBSS_W1_MODESTRAP_MASK		GENMASK(18, 17)
-#define USBSS_W1_MODESTRAP_SHIFT	17
-#define USBSS_W1_USB2_ONLY		BIT(19)
-
-/* Static config register bits */
-#define USBSS1_STATIC_PLL_REF_SEL_MASK	GENMASK(8, 5)
-#define USBSS1_STATIC_PLL_REF_SEL_SHIFT	5
-#define USBSS1_STATIC_LOOPBACK_MODE_MASK	GENMASK(4, 3)
-#define USBSS1_STATIC_LOOPBACK_MODE_SHIFT	3
-#define USBSS1_STATIC_VBUS_SEL_MASK	GENMASK(2, 1)
-#define USBSS1_STATIC_VBUS_SEL_SHIFT	1
-#define USBSS1_STATIC_LANE_REVERSE	BIT(0)
-
-/* Modestrap modes */
-enum modestrap_mode { USBSS_MODESTRAP_MODE_NONE,
-		      USBSS_MODESTRAP_MODE_HOST,
-		      USBSS_MODESTRAP_MODE_PERIPHERAL};
-
-struct cdns_ti {
-	struct device *dev;
-	void __iomem *usbss;
-	int usb2_only:1;
-	int vbus_divider:1;
-	struct clk *usb2_refclk;
-	struct clk *lpm_clk;
-};
-
-static const int cdns_ti_rate_table[] = {	/* in KHZ */
-	9600,
-	10000,
-	12000,
-	19200,
-	20000,
-	24000,
-	25000,
-	26000,
-	38400,
-	40000,
-	58000,
-	50000,
-	52000,
-};
-
-static inline u32 cdns_ti_readl(struct cdns_ti *data, u32 offset)
-{
-	return readl(data->usbss + offset);
-}
-
-static inline void cdns_ti_writel(struct cdns_ti *data, u32 offset, u32 value)
-{
-	writel(value, data->usbss + offset);
-}
-
-static int cdns_ti_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct device_node *node = pdev->dev.of_node;
-	struct cdns_ti *data;
-	struct resource	*res;
-	int error;
-	u32 reg;
-	int modestrap_mode;
-	int rate_code, i;
-	unsigned long rate;
-
-	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, data);
-
-	data->dev = dev;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	data->usbss = devm_ioremap_resource(dev, res);
-	if (IS_ERR(data->usbss))
-		return PTR_ERR(data->usbss);
-
-	data->usb2_refclk = devm_clk_get(dev, "usb2_refclk");
-	if (IS_ERR(data->usb2_refclk)) {
-		dev_err(dev, "can't get usb2_refclk\n");
-		return PTR_ERR(data->usb2_refclk);
-	}
-
-	data->lpm_clk = devm_clk_get(dev, "lpm_clk");
-	if (IS_ERR(data->lpm_clk)) {
-		dev_err(dev, "can't get lpm_clk\n");
-		return PTR_ERR(data->lpm_clk);
-	}
-
-	rate = clk_get_rate(data->usb2_refclk);
-	rate /= 1000;	/* To KHz */
-	for (i = 0; i < ARRAY_SIZE(cdns_ti_rate_table); i++) {
-		if (cdns_ti_rate_table[i] == rate)
-			break;
-	}
-
-	if (i == ARRAY_SIZE(cdns_ti_rate_table)) {
-		dev_err(dev, "unsupported usb2_refclk rate: %lu KHz\n", rate);
-		return -EINVAL;
-	}
-
-	rate_code = i;
-
-	pm_runtime_enable(dev);
-	error = pm_runtime_get_sync(dev);
-	if (error < 0) {
-		dev_err(dev, "pm_runtime_get_sync failed: %d\n", error);
-		goto err_get;
-	}
-
-	/* assert RESET */
-	reg = cdns_ti_readl(data, USBSS_W1);
-	reg &= ~USBSS_W1_PWRUP_RST;
-	cdns_ti_writel(data, USBSS_W1, reg);
-
-	/* set static config */
-	reg = cdns_ti_readl(data, USBSS_STATIC_CONFIG);
-	reg &= ~USBSS1_STATIC_PLL_REF_SEL_MASK;
-	reg |= rate_code << USBSS1_STATIC_PLL_REF_SEL_SHIFT;
-
-	reg &= ~USBSS1_STATIC_VBUS_SEL_MASK;
-	data->vbus_divider = device_property_read_bool(dev, "ti,vbus-divider");
-	if (data->vbus_divider)
-		reg |= 1 << USBSS1_STATIC_VBUS_SEL_SHIFT;
-
-	cdns_ti_writel(data, USBSS_STATIC_CONFIG, reg);
-	reg = cdns_ti_readl(data, USBSS_STATIC_CONFIG);
-
-	/* set USB2_ONLY mode if requested */
-	reg = cdns_ti_readl(data, USBSS_W1);
-	data->usb2_only = device_property_read_bool(dev, "ti,usb2-only");
-	if (data->usb2_only)
-		reg |= USBSS_W1_USB2_ONLY;
-
-	/* set modestrap  */
-	if (device_property_read_bool(dev, "ti,modestrap-host"))
-		modestrap_mode = USBSS_MODESTRAP_MODE_HOST;
-	else if (device_property_read_bool(dev, "ti,modestrap-peripheral"))
-		modestrap_mode = USBSS_MODESTRAP_MODE_PERIPHERAL;
-	else
-		modestrap_mode = USBSS_MODESTRAP_MODE_NONE;
-
-	reg |= USBSS_W1_MODESTRAP_SEL;
-	reg &= ~USBSS_W1_MODESTRAP_MASK;
-	reg |= modestrap_mode << USBSS_W1_MODESTRAP_SHIFT;
-	cdns_ti_writel(data, USBSS_W1, reg);
-
-	/* de-assert RESET */
-	reg |= USBSS_W1_PWRUP_RST;
-	cdns_ti_writel(data, USBSS_W1, reg);
-
-	error = of_platform_populate(node, NULL, NULL, dev);
-	if (error) {
-		dev_err(dev, "failed to create children: %d\n", error);
-		goto err;
-	}
-
-	return 0;
-
-err:
-	pm_runtime_put_sync(data->dev);
-err_get:
-	pm_runtime_disable(data->dev);
-
-	return error;
-}
-
-static int cdns_ti_remove_core(struct device *dev, void *c)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-
-	platform_device_unregister(pdev);
-
-	return 0;
-}
-
-static int cdns_ti_remove(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-
-	device_for_each_child(dev, NULL, cdns_ti_remove_core);
-	pm_runtime_put_sync(dev);
-	pm_runtime_disable(dev);
-
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
-static const struct of_device_id cdns_ti_of_match[] = {
-	{ .compatible = "ti,j721e-usb", },
-	{},
-};
-MODULE_DEVICE_TABLE(of, cdns_ti_of_match);
-
-static struct platform_driver cdns_ti_driver = {
-	.probe		= cdns_ti_probe,
-	.remove		= cdns_ti_remove,
-	.driver		= {
-		.name	= "cdns3-ti",
-		.of_match_table	= cdns_ti_of_match,
-	},
-};
-
-module_platform_driver(cdns_ti_driver);
-
-MODULE_ALIAS("platform:cdns3-ti");
-MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("Cadence USB3 TI Glue Layer");